You'll need to make parking reservations at some parks and conservation areas along the Bruce Trail.
Parking reservations are currently required for:
Conservation Halton (conservationhalton.ca, parksvisit.ca)
Ontario Parks (reservations.ontarioparks.com)
Reservations not required in the winter but will resume in Spring 2022 for:
Hamilton Conservation Authority (conservationhamilton.ca)
Credit Valley Conservation (cvc.ca)
Bruce Peninsula National Park (pc.gc.ca/bruce)
Lion's Head, McCurdy Drive (lionsheadparking.ca)